<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>局部描点</title>
  <style>
    div {
      
    }
    #menu {
      width: 500px;
      height: 60px;
      border: 1px solid #a0a0a4;
    }
    #list {
      width: 500px;
      height: 500px;
      overflow: auto;
      border: 1px solid #a0a0a4;
    }
  </style>
</head>
<body>
  <div class="container">
    <div id="menu"></div>
    <div id="list"></div>
  </div>
  <script>
    
    // 给容器添加元素
    (()=> {
      const list = document.getElementById('list')
      const menu = document.getElementById('menu')
      for (let i = 0; i < 10; i++) {
        const item = document.createElement('div')
        item.id = i
        item.innerHTML = `${i}: asdfasdfasdf`
        item.style = 'height: 200px;'
        list.appendChild(item)

        const btn = document.createElement('button')
        btn.innerText = i
        btn.style = 'margin-right: 20px;'
        menu.appendChild(btn)
      }

      menu.onclick = (e) => {
        e.stopPropagation();
        const i = e.target.innerText
        if (document.getElementById(i)) {
          document.getElementById(i).scrollIntoView({ behavior: "smooth" })
        }
      }
    })()

    
  </script>
</body>
</html>